[z_archive/KronOS.git] / video / user_guide / libraries / pagination.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Pagination Class : CodeIgniter User Guide</title>

<style type='text/css' media='all'>@import url('../userguide.css');</style>
<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />

<script type="text/javascript" src="../nav/nav.js"></script>
<script type="text/javascript" src="../nav/prototype.lite.js"></script>
<script type="text/javascript" src="../nav/moo.fx.js"></script>
<script type="text/javascript" src="../nav/user_guide_menu.js"></script>

<meta http-equiv='expires' content='-1' />
<meta http-equiv= 'pragma' content='no-cache' />
<meta name='robots' content='all' />
<meta name='author' content='ExpressionEngine Dev Team' />
<meta name='description' content='CodeIgniter User Guide' />

</head>
<body>

<!-- START NAVIGATION -->
<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
<div id="masthead">
<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
<tr>
<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
</tr>
</table>
</div>
<!-- END NAVIGATION -->


<!-- START BREADCRUMB -->
<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
<tr>
<td id="breadcrumb">
<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
Pagination Class
</td>
<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>
</tr>
</table>
<!-- END BREADCRUMB -->

<br clear="all" />


<!-- START CONTENT -->
<div id="content">


<h1>Pagination Class</h1>

<p>CodeIgniter's Pagination class is very easy to use, and it is 100% customizable, either dynamically or via stored preferences.</p>

<p>If you are not familiar with the term "pagination", it refers to links that allows you to navigate from page to page, like this:</p>

<code><a href="#">&laquo; First</a>&nbsp;&nbsp;<a href="#">&lt;</a>&nbsp;<a href="#">1</a>&nbsp;<a href="#">2</a>&nbsp;<b>3</b>&nbsp;<a href="#">4</a>&nbsp;<a href="#">5</a>&nbsp;<a href="#">&gt;</a>&nbsp;&nbsp;<a href="#">Last &raquo;</a></code>

<h2>Example</h2>

<p>Here is a simple example showing how to create pagination in one of your <a href="../general/controllers.html">controller</a> functions:</p>

<code>
$this->load->library('pagination');<br /><br />
$config['base_url'] = 'http://example.com/index.php/test/page/';<br />
$config['total_rows'] = 200;<br />
$config['per_page']  = 20;
<br /><br />
$this->pagination->initialize($config);

<br /><br />
echo  $this->pagination->create_links();</code>

<h3>Notes:</h3>

<p>The <var>$config</var> array contains your configuration variables.  It is passed to the <dfn>$this->pagination->initialize</dfn> function as shown above.  Although there are some twenty items you can configure, at
minimum you need the three shown.  Here is a description of what those items represent:</p>

<ul>
	<li><strong>base_url</strong> This is the full URL to the controller class/function containing your pagination.  In the example
	above, it is pointing to a controller called "Test" and a function called "page".  Keep in mind that you can
	<a href="../general/routing.html">re-route your URI</a> if you need a different structure.</li>
	<li><strong>total_rows</strong> This number represents the total rows in the result set you are creating pagination for.
	Typically this number will be the total rows that your database query returned.
	</li>
	<li><strong>per_page</strong> The number of items you intend to show per page.  In the above example, you would be showing 20 items per page.</li>
</ul>

<p>The <var>create_links()</var> function returns an empty string when there is no pagination to show.</p>


<h3>Setting preferences in a config file</h3>

<p>If you prefer not to set preferences using the above method, you can instead put them into a config file.
Simply create a new file called <var>pagination.php</var>,  add the <var>$config</var>
array in that file. Then save the file in: <var>config/pagination.php</var> and it will be used automatically. You
will NOT need to use the <dfn>$this->pagination->initialize</dfn> function if you save your preferences in a config file.</p>


<h2>Customizing the Pagination</h2>

<p>The following is a list of all the preferences you can pass to the initialization function to tailor the display.</p>


<h4>$config['uri_segment'] = 3;</h4>

<p>The pagination function automatically determines which segment of your URI contains the page number. If you need
something different you can specify it.</p>

<h4>$config['num_links'] = 2;</h4>

<p>The number of &quot;digit&quot; links you would like before and after the selected page number. For example, the number 2
	will place two digits on either side, as in the example links at the very top of this page.</p>

<h4>$config['use_page_numbers'] = TRUE;</h4>
<p>By default, the URI segment will use the starting index for the items you are paginating. If you prefer to show the the actual page number, set this to TRUE.</p>

<h4>$config['page_query_string'] = TRUE;</h4>
<p>By default, the pagination library assume you are using <a href="../general/urls.html">URI Segments</a>, and constructs your links something like</p>
<p><code>http://example.com/index.php/test/page/20</code></p>
<p>If you have $config['enable_query_strings']  set to TRUE your links will automatically be re-written using Query Strings. This option can also be explictly set. Using $config['page_query_string'] set to TRUE, the pagination link will become.</p>
<p><code>http://example.com/index.php?c=test&amp;m=page&amp;per_page=20</code></p>
<p>Note that &quot;per_page&quot; is the default query string  passed, however can be configured using $config['query_string_segment'] = 'your_string'</p>
<h2>Adding Enclosing Markup</h2>

<p>If you would like to surround the entire pagination with some markup you can do it with these two prefs:</p>

<h4>$config['full_tag_open'] = '&lt;p>';</h4>
<p>The opening tag placed on the left side of the entire result.</p>

<h4>$config['full_tag_close'] = '&lt;/p>';</h4>
<p>The closing tag placed on the right side of the entire result.</p>


<h2>Customizing the First Link</h2>

<h4>$config['first_link'] = 'First';</h4>
<p>The text you would like shown in the "first" link on the left. If you do not want this link rendered, you can set its value to FALSE.</p>

<h4>$config['first_tag_open'] = '&lt;div>';</h4>
<p>The opening tag for the "first" link.</p>

<h4>$config['first_tag_close'] = '&lt;/div>';</h4>
<p>The closing tag for the "first" link.</p>

<h2>Customizing the Last Link</h2>

<h4>$config['last_link'] = 'Last';</h4>
<p>The text you would like shown in the "last" link on the right. If you do not want this link rendered, you can set its value to FALSE.</p>

<h4>$config['last_tag_open'] = '&lt;div>';</h4>
<p>The opening tag for the "last" link.</p>

<h4>$config['last_tag_close'] = '&lt;/div>';</h4>
<p>The closing tag for the "last" link.</p>

<h2>Customizing the "Next" Link</h2>

<h4>$config['next_link'] = '&amp;gt;';</h4>
<p>The text you would like shown in the "next" page link. If you do not want this link rendered, you can set its value to FALSE.</p>

<h4>$config['next_tag_open'] = '&lt;div>';</h4>
<p>The opening tag for the "next" link.</p>

<h4>$config['next_tag_close'] = '&lt;/div>';</h4>
<p>The closing tag for the "next" link.</p>

<h2>Customizing the "Previous" Link</h2>

<h4>$config['prev_link'] = '&amp;lt;';</h4>
<p>The text you would like shown in the "previous" page link. If you do not want this link rendered, you can set its value to FALSE.</p>

<h4>$config['prev_tag_open'] = '&lt;div>';</h4>
<p>The opening tag for the "previous" link.</p>

<h4>$config['prev_tag_close'] = '&lt;/div>';</h4>
<p>The closing tag for the "previous" link.</p>

<h2>Customizing the "Current Page" Link</h2>

<h4>$config['cur_tag_open'] = '&lt;b>';</h4>
<p>The opening tag for the "current" link.</p>

<h4>$config['cur_tag_close'] = '&lt;/b>';</h4>
<p>The closing tag for the "current" link.</p>


<h2>Customizing the "Digit" Link</h2>

<h4>$config['num_tag_open'] = '&lt;div>';</h4>
<p>The opening tag for the "digit" link.</p>

<h4>$config['num_tag_close'] = '&lt;/div>';</h4>
<p>The closing tag for the "digit" link.</p>

<h2>Hiding the Pages</h2>

<p>If you wanted to not list the specific pages (for example, you only want "next" and "previous" links), you can suppress their rendering by adding:</p>

<code>
$config['display_pages'] = FALSE;
</code>


<h2>Adding a class to every anchor</h2>

<p>If you want to add a class attribute to every link rendered by the pagination class, you can set the config "anchor_class" equal to the classname you want.</p>

</div>
<!-- END CONTENT -->


<div id="footer">
<p>
Previous Topic:&nbsp;&nbsp;<a href="output.html">Output Class</a>
&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
<a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
<a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
Next Topic:&nbsp;&nbsp;<a href="sessions.html">Session Class</a>
</p>
<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006 - 2012 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
</div>

</body>
</html>
Commit	Line	Data
59c06b17 CS	1	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	2	<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
	3	<head>
	4
	5	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	6	<title>Pagination Class : CodeIgniter User Guide</title>
	7
	8	<style type='text/css' media='all'>@import url('../userguide.css');</style>
	9	<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
	10
	11	<script type="text/javascript" src="../nav/nav.js"></script>
	12	<script type="text/javascript" src="../nav/prototype.lite.js"></script>
	13	<script type="text/javascript" src="../nav/moo.fx.js"></script>
	14	<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
	15
	16	<meta http-equiv='expires' content='-1' />
	17	<meta http-equiv= 'pragma' content='no-cache' />
	18	<meta name='robots' content='all' />
	19	<meta name='author' content='ExpressionEngine Dev Team' />
	20	<meta name='description' content='CodeIgniter User Guide' />
	21
	22	</head>
	23	<body>
	24
	25	<!-- START NAVIGATION -->
	26	<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
	27	<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
	28	<div id="masthead">
	29	<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
	30	<tr>
	31	<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
	32	<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
	33	</tr>
	34	</table>
	35	</div>
	36	<!-- END NAVIGATION -->
	37
	38
	39	<!-- START BREADCRUMB -->
	40	<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
	41	<tr>
	42	<td id="breadcrumb">
	43	<a href="http://codeigniter.com/">CodeIgniter Home</a>  ›
	44	<a href="../index.html">User Guide Home</a>  ›
	45	Pagination Class
	46	</td>
	47	<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide  <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
	48	</tr>
	49	</table>
	50	<!-- END BREADCRUMB -->
	51
	52	<br clear="all" />
	53
	54
	55	<!-- START CONTENT -->
	56	<div id="content">
	57
	58
	59	<h1>Pagination Class</h1>
	60
	61	<p>CodeIgniter's Pagination class is very easy to use, and it is 100% customizable, either dynamically or via stored preferences.</p>
	62
	63	<p>If you are not familiar with the term "pagination", it refers to links that allows you to navigate from page to page, like this:</p>
	64
65	<code><a href="#">« First</a>  <a href="#"><</a> <a href="#">1</a> <a href="#">2</a> <b>3</b> <a href="#">4</a> <a href="#">5</a> <a href="#">></a>  <a href="#">Last »</a></code>
66
67	<h2>Example</h2>
68
69	<p>Here is a simple example showing how to create pagination in one of your <a href="../general/controllers.html">controller</a> functions:</p>
70
71	<code>
72	$this->load->library('pagination');<br /><br />
73	$config['base_url'] = 'http://example.com/index.php/test/page/';<br />
74	$config['total_rows'] = 200;<br />
75	$config['per_page'] = 20;
76	<br /><br />
77	$this->pagination->initialize($config);
78
79	<br /><br />
80	echo $this->pagination->create_links();</code>
81
82	<h3>Notes:</h3>
83
84	<p>The <var>$config</var> array contains your configuration variables. It is passed to the <dfn>$this->pagination->initialize</dfn> function as shown above. Although there are some twenty items you can configure, at
85	minimum you need the three shown. Here is a description of what those items represent:</p>
86
87	<ul>
88	<li><strong>base_url</strong> This is the full URL to the controller class/function containing your pagination. In the example
89	above, it is pointing to a controller called "Test" and a function called "page". Keep in mind that you can
90	<a href="../general/routing.html">re-route your URI</a> if you need a different structure.</li>
91	<li><strong>total_rows</strong> This number represents the total rows in the result set you are creating pagination for.
92	Typically this number will be the total rows that your database query returned.
93	</li>
94	<li><strong>per_page</strong> The number of items you intend to show per page. In the above example, you would be showing 20 items per page.</li>
95	</ul>
96
97	<p>The <var>create_links()</var> function returns an empty string when there is no pagination to show.</p>
98
99
100	<h3>Setting preferences in a config file</h3>
101
102	<p>If you prefer not to set preferences using the above method, you can instead put them into a config file.
103	Simply create a new file called <var>pagination.php</var>, add the <var>$config</var>
104	array in that file. Then save the file in: <var>config/pagination.php</var> and it will be used automatically. You
105	will NOT need to use the <dfn>$this->pagination->initialize</dfn> function if you save your preferences in a config file.</p>
106
107
108	<h2>Customizing the Pagination</h2>
109
110	<p>The following is a list of all the preferences you can pass to the initialization function to tailor the display.</p>
111
112
113	<h4>$config['uri_segment'] = 3;</h4>
114
115	<p>The pagination function automatically determines which segment of your URI contains the page number. If you need
116	something different you can specify it.</p>
117
118	<h4>$config['num_links'] = 2;</h4>
119
120	<p>The number of "digit" links you would like before and after the selected page number. For example, the number 2
121	will place two digits on either side, as in the example links at the very top of this page.</p>
122
123	<h4>$config['use_page_numbers'] = TRUE;</h4>
124	<p>By default, the URI segment will use the starting index for the items you are paginating. If you prefer to show the the actual page number, set this to TRUE.</p>
125
126	<h4>$config['page_query_string'] = TRUE;</h4>
127	<p>By default, the pagination library assume you are using <a href="../general/urls.html">URI Segments</a>, and constructs your links something like</p>
128	<p><code>http://example.com/index.php/test/page/20</code></p>
129	<p>If you have $config['enable_query_strings'] set to TRUE your links will automatically be re-written using Query Strings. This option can also be explictly set. Using $config['page_query_string'] set to TRUE, the pagination link will become.</p>
130	<p><code>http://example.com/index.php?c=test&m=page&per_page=20</code></p>
131	<p>Note that "per_page" is the default query string passed, however can be configured using $config['query_string_segment'] = 'your_string'</p>
132	<h2>Adding Enclosing Markup</h2>
133
134	<p>If you would like to surround the entire pagination with some markup you can do it with these two prefs:</p>
135
136	<h4>$config['full_tag_open'] = '<p>';</h4>
137	<p>The opening tag placed on the left side of the entire result.</p>
138
139	<h4>$config['full_tag_close'] = '</p>';</h4>
140	<p>The closing tag placed on the right side of the entire result.</p>
141
142
143	<h2>Customizing the First Link</h2>
144
145	<h4>$config['first_link'] = 'First';</h4>
146	<p>The text you would like shown in the "first" link on the left. If you do not want this link rendered, you can set its value to FALSE.</p>
147
148	<h4>$config['first_tag_open'] = '<div>';</h4>
149	<p>The opening tag for the "first" link.</p>
150
151	<h4>$config['first_tag_close'] = '</div>';</h4>
152	<p>The closing tag for the "first" link.</p>
153
154	<h2>Customizing the Last Link</h2>
155
156	<h4>$config['last_link'] = 'Last';</h4>
157	<p>The text you would like shown in the "last" link on the right. If you do not want this link rendered, you can set its value to FALSE.</p>
158
159	<h4>$config['last_tag_open'] = '<div>';</h4>
160	<p>The opening tag for the "last" link.</p>
161
162	<h4>$config['last_tag_close'] = '</div>';</h4>
163	<p>The closing tag for the "last" link.</p>
164
165	<h2>Customizing the "Next" Link</h2>
166
167	<h4>$config['next_link'] = '&gt;';</h4>
168	<p>The text you would like shown in the "next" page link. If you do not want this link rendered, you can set its value to FALSE.</p>
169
170	<h4>$config['next_tag_open'] = '<div>';</h4>
171	<p>The opening tag for the "next" link.</p>
172
173	<h4>$config['next_tag_close'] = '</div>';</h4>
174	<p>The closing tag for the "next" link.</p>
175
176	<h2>Customizing the "Previous" Link</h2>
177
178	<h4>$config['prev_link'] = '&lt;';</h4>
179	<p>The text you would like shown in the "previous" page link. If you do not want this link rendered, you can set its value to FALSE.</p>
180
181	<h4>$config['prev_tag_open'] = '<div>';</h4>
182	<p>The opening tag for the "previous" link.</p>
183
184	<h4>$config['prev_tag_close'] = '</div>';</h4>
185	<p>The closing tag for the "previous" link.</p>
186
187	<h2>Customizing the "Current Page" Link</h2>
188
189	<h4>$config['cur_tag_open'] = '<b>';</h4>
190	<p>The opening tag for the "current" link.</p>
191
192	<h4>$config['cur_tag_close'] = '</b>';</h4>
193	<p>The closing tag for the "current" link.</p>
194
195
196	<h2>Customizing the "Digit" Link</h2>
197
198	<h4>$config['num_tag_open'] = '<div>';</h4>
199	<p>The opening tag for the "digit" link.</p>
200
201	<h4>$config['num_tag_close'] = '</div>';</h4>
202	<p>The closing tag for the "digit" link.</p>
203
204	<h2>Hiding the Pages</h2>
205
206	<p>If you wanted to not list the specific pages (for example, you only want "next" and "previous" links), you can suppress their rendering by adding:</p>
207
208	<code>
209	$config['display_pages'] = FALSE;
210	</code>
211
212
213	<h2>Adding a class to every anchor</h2>
214
215	<p>If you want to add a class attribute to every link rendered by the pagination class, you can set the config "anchor_class" equal to the classname you want.</p>
216
217	</div>
218	<!-- END CONTENT -->
219
220
221	<div id="footer">
222	<p>
223	Previous Topic:  <a href="output.html">Output Class</a>
224	·
225	<a href="#top">Top of Page</a>   ·
226	<a href="../index.html">User Guide Home</a>   ·
227	Next Topic:  <a href="sessions.html">Session Class</a>
228	</p>
229	<p><a href="http://codeigniter.com">CodeIgniter</a>  ·  Copyright © 2006 - 2012  ·  <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
230	</div>
231
232	</body>
233	</html>